September Weather in Bartonsville, United States

Last updated: June 24, 2025

In September, the average temperature in Bartonsville, United States hovers around 21°C (70°F). Expect a minimum of 4°C (40°F) and a maximum of 34°C (94°F). With an average precipitation of 111 mm (4.4 in) spread over 10 days, the humidity tends to be on the higher side at 75%.

September Temperature in Bartonsville

In September in Bartonsville, the average temperature is 21°C (70°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 4°C (40°F). It's a great time for travelers to enjoy a mix of warm days and cooler evenings, making it perfect for outdoor activities and sightseeing.

September Weather in Bartonsville: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bartonsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bartonsville, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (40°F).

Data source: Temperature data for Bartonsville generated using information from the Copernicus Climate Change Service.

September Precipitation in Bartonsville

In Bartonsville in September, the precipitation amount is 111 mm (4.4 in) over a span of 10 days.

September Precipitation Trends in Bartonsville

The chart displays monthly precipitation patterns in Bartonsville, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Bartonsville, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Bartonsville

In Bartonsville in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

September Average Humidity in Bartonsville

This chart illustrates the average monthly humidity levels in Bartonsville, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Bartonsville is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bartonsville

In Bartonsville in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Bartonsville.

Maximum UV Index Levels in Bartonsville for September

The chart shows the monthly maximum UV Index (UVI) for Bartonsville in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Bartonsville typically reaches 8, which falls under the very high exposure category.

Data source: Bartonsville September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Bartonsville Compares to Other Months

Weather in Bartonsville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bartonsville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bartonsville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	61 mm (2.4 inches)	84%	moderate
February Weather	4°C (39°F)	95 mm (3.7 inches)	83%	moderate
March Weather	7°C (44°F)	92 mm (3.6 inches)	83%	high
April Weather	12°C (55°F)	97 mm (3.8 inches)	81%	very high
May Weather	18°C (64°F)	138 mm (5.5 inches)	78%	very high
June Weather	23°C (73°F)	121 mm (4.8 inches)	79%	very high
July Weather	26°C (79°F)	146 mm (5.7 inches)	74%	very high
August Weather	24°C (76°F)	134 mm (5.3 inches)	72%	very high
September Weather	21°C (70°F)	111 mm (4.4 inches)	75%	very high
October Weather	15°C (60°F)	100 mm (3.9 inches)	81%	high
November Weather	7°C (45°F)	90 mm (3.6 inches)	85%	moderate
December Weather	4°C (39°F)	94 mm (3.7 inches)	84%	moderate